Oxygen redox activity through a reductive coupling mechanism in the P3-type nickel-doped sodium manganese oxide

Eun Jeong Kim; Le Anh Ma; Laurent C Duda; David M Pickup; Alan V Chadwick; Reza Younesi; John T. S. Irvine; Robert Armstrong

doi:10.1021/acsaem.9b02171

Oxygen redox activity through a reductive coupling mechanism in the P3-type nickel-doped sodium manganese oxide

Eun Jeong Kim, Le Anh Ma, Laurent C Duda, David M Pickup, Alan V Chadwick, Reza Younesi, John T. S. Irvine, Robert Armstrong^*

^*Corresponding author for this work

School of Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Increasing dependence on rechargeable batteries for energy storage calls for the improvement of energy density of batteries. Toward this goal, introduction of positive electrode materials with high voltage and/or high capacity is in high demand. The use of oxygen chemistry in lithium and sodium layered oxides has been of interest to achieve high capacity. Nevertheless, a complete understanding of oxygen-based redox processes remains elusive especially in sodium ion batteries. Herein, a novel P3-type Na_0.67Ni_0.2Mn_0.8O₂, synthesized at low temperature, exhibits oxygen redox activity in high potentials. Characterization using a range of spectroscopic techniques reveals the anionic redox activity is stabilized by the reduction of Ni, because of the strong Ni 3d–O 2p hybridization states created during charge. This observation suggests that different route of oxygen redox processes occur in P3 structure materials, which can lead to the exploration of oxygen redox chemistry for further development in rechargeable batteries.

Original language	English
Journal	ACS Applied Energy Materials
Volume	Early View
Early online date	6 Jan 2020
DOIs	https://doi.org/10.1021/acsaem.9b02171
Publication status	E-pub ahead of print - 6 Jan 2020

Keywords

Sodium ion batteries
Layered oxides
Anion redox
P3 structure
Reductive coupling mechanism
Resonant inelastic X-ray scattering

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10.1021/acsaem.9b02171

Kim_2019_ACSAEM_P3_AAM
Copyright © 2019 American Chemical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1021/acsaem.9b02171
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title = "Oxygen redox activity through a reductive coupling mechanism in the P3-type nickel-doped sodium manganese oxide",

abstract = "Increasing dependence on rechargeable batteries for energy storage calls for the improvement of energy density of batteries. Toward this goal, introduction of positive electrode materials with high voltage and/or high capacity is in high demand. The use of oxygen chemistry in lithium and sodium layered oxides has been of interest to achieve high capacity. Nevertheless, a complete understanding of oxygen-based redox processes remains elusive especially in sodium ion batteries. Herein, a novel P3-type Na0.67Ni0.2Mn0.8O2, synthesized at low temperature, exhibits oxygen redox activity in high potentials. Characterization using a range of spectroscopic techniques reveals the anionic redox activity is stabilized by the reduction of Ni, because of the strong Ni 3d–O 2p hybridization states created during charge. This observation suggests that different route of oxygen redox processes occur in P3 structure materials, which can lead to the exploration of oxygen redox chemistry for further development in rechargeable batteries.",

keywords = "Sodium ion batteries, Layered oxides, Anion redox, P3 structure, Reductive coupling mechanism, Resonant inelastic X-ray scattering",

author = "Kim, {Eun Jeong} and Ma, {Le Anh} and Duda, {Laurent C} and Pickup, {David M} and Chadwick, {Alan V} and Reza Younesi and Irvine, {John T. S.} and Robert Armstrong",

note = "EJK would like to thank the Alistore ERI for the award of a studentship and Ok Sung Jeon at Yonsei University for ICP-OES measurement. The authors are grateful for the provision of beam time and assistance from instrument scientists at beamlines B18 at the Diamond Light source (as part of the Energy Materials Block Allocation Group SP14239), BL27SU at Spring 8 and GEM diffractometer at ISIS at the Rutherford Appleton Laboratory.",

year = "2020",

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doi = "10.1021/acsaem.9b02171",

language = "English",

volume = "Early View",

journal = "ACS Applied Energy Materials",

issn = "2574-0962",

publisher = "American Chemical Society (ACS)",

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T1 - Oxygen redox activity through a reductive coupling mechanism in the P3-type nickel-doped sodium manganese oxide

AU - Kim, Eun Jeong

AU - Ma, Le Anh

AU - Duda, Laurent C

AU - Pickup, David M

AU - Chadwick, Alan V

AU - Younesi, Reza

AU - Irvine, John T. S.

AU - Armstrong, Robert

N1 - EJK would like to thank the Alistore ERI for the award of a studentship and Ok Sung Jeon at Yonsei University for ICP-OES measurement. The authors are grateful for the provision of beam time and assistance from instrument scientists at beamlines B18 at the Diamond Light source (as part of the Energy Materials Block Allocation Group SP14239), BL27SU at Spring 8 and GEM diffractometer at ISIS at the Rutherford Appleton Laboratory.

PY - 2020/1/6

Y1 - 2020/1/6

N2 - Increasing dependence on rechargeable batteries for energy storage calls for the improvement of energy density of batteries. Toward this goal, introduction of positive electrode materials with high voltage and/or high capacity is in high demand. The use of oxygen chemistry in lithium and sodium layered oxides has been of interest to achieve high capacity. Nevertheless, a complete understanding of oxygen-based redox processes remains elusive especially in sodium ion batteries. Herein, a novel P3-type Na0.67Ni0.2Mn0.8O2, synthesized at low temperature, exhibits oxygen redox activity in high potentials. Characterization using a range of spectroscopic techniques reveals the anionic redox activity is stabilized by the reduction of Ni, because of the strong Ni 3d–O 2p hybridization states created during charge. This observation suggests that different route of oxygen redox processes occur in P3 structure materials, which can lead to the exploration of oxygen redox chemistry for further development in rechargeable batteries.

AB - Increasing dependence on rechargeable batteries for energy storage calls for the improvement of energy density of batteries. Toward this goal, introduction of positive electrode materials with high voltage and/or high capacity is in high demand. The use of oxygen chemistry in lithium and sodium layered oxides has been of interest to achieve high capacity. Nevertheless, a complete understanding of oxygen-based redox processes remains elusive especially in sodium ion batteries. Herein, a novel P3-type Na0.67Ni0.2Mn0.8O2, synthesized at low temperature, exhibits oxygen redox activity in high potentials. Characterization using a range of spectroscopic techniques reveals the anionic redox activity is stabilized by the reduction of Ni, because of the strong Ni 3d–O 2p hybridization states created during charge. This observation suggests that different route of oxygen redox processes occur in P3 structure materials, which can lead to the exploration of oxygen redox chemistry for further development in rechargeable batteries.

KW - Sodium ion batteries

KW - Layered oxides

KW - Anion redox

KW - P3 structure

KW - Reductive coupling mechanism

KW - Resonant inelastic X-ray scattering

U2 - 10.1021/acsaem.9b02171

DO - 10.1021/acsaem.9b02171

M3 - Article

SN - 2574-0962

VL - Early View

JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

ER -

Oxygen redox activity through a reductive coupling mechanism in the P3-type nickel-doped sodium manganese oxide

Abstract

Keywords

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